Figure 1. A plain KUB film (A) did not show any evidence of a calculus, but a clear and prominent psoas shadow in the right iliac fossa, indicating intramuscular space occupying lesion (arrows). A gallium-67 scan for infectious screening (B) delineated a fusiform lesion originates from the right paravertebral region of lower L-spine, extending downwards to the right sacroiliac articulation and the ipsilateral gluteal region (black arrow), implying right iliopsoas abscess. Cortical disruption of the inferior end-plate of T8 with erosion opposite vertebral end (open arrow) was consistent with degenerative spondylosis on sagittal tomographic section (C)

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Staphylococcus aureus Bacteremia Complicated by Psoas Abscess

David Bellin, Eric Chun-Pu Chu

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